基于绿色基础设施评价的城市生态带划定--以杭州市为例

发布时间：2018-06-22 00:20

本文选题：绿色基础设施评价 + 生态带　；参考：以杭州市为例

【摘要】：生态带是生态宜居城市的重要组成内容,其科学识别对于城市空间管控意义重大。从弹性结合刚性的协同模式出发,现有研究缺乏针对生态廊道的空间落实进而导致生态带片状孤立的尴尬局面;缺乏针对城市空间增长的多情景分析进而导致划定成果缺乏动态调整,并受制于政府决策及重大事件等。以杭州市为例,利用Landsat TM影像数据,基于绿色基础设施评价及情景分析,综合划定城市生态带。结果表明:(1)主城区北、东侧建设开发风险相对较低,而南、西、西南需重点保护;(2)生态管控情景中弹性建设面积由20%增至35%,其空间侵蚀能力逐步增强,其中三级、四级管控情景已对区域生态格局造成严重挑战;(3)生态带划定范围包括"北部—临平"生态带(总面积272.17 km~2,占比5.60%.)、"东部—义蓬"生态带(总面积310.21 km~2,占比6.33%)、"南部—临浦"生态带(总面积828.43 km~2,占比17.00%)、"西南部—富阳"生态带(总面积1583.02 km~2,占比32.32%)及"西北部—良渚"生态带(总面积680.42 km~2,占比13.89%)。
[Abstract]:Ecological zone is an important component of eco-livable city, and its scientific identification is of great significance to urban spatial control. Based on the cooperative model of flexibility and rigidity, the present research lacks the space implementation of ecological corridor, which leads to the embarrassing situation of the ecological belt being isolated. The lack of multi-scenario analysis for urban spatial growth leads to the lack of dynamic adjustment of the demarcation results and is constrained by government decisions and major events. Taking Hangzhou as an example, using Landsat TM image data, based on the evaluation of green infrastructure and scene analysis, the urban ecological zone is comprehensively delineated. The results show that: (1) the risk of construction and development in the north and east of the main urban area is relatively low, while in the south and southwest, the key protection is needed; (2) the area of elastic construction in the ecological control and control scenario increases from 20% to 35%, and its spatial erosion capacity is gradually enhanced, among which, the third level. (3) the delineation of the ecological zone includes the "northern-Linping" ecological zone (with a total area of 272.17 km2, accounting for 5.6000kg.), the "East-Yipeng" ecological zone (with a total area of 310.21 km2, accounting for 6.33%), and the southern- Linpu ecological zone (with a total area of 828.43 km ~ 2, accounting for 17.00%), "Southwest Fuyang" ecological zone (with a total area of 1583.02 km ~ (2), accounting for 32.32%) and "Northwest Liangzhu" ecological zone (with a total area of 680.42 km ~ (2), accounting for 13.89%).
【作者单位】：浙江大学建筑工程学院;
【基金】：国家自然科学基金项目(51578483)
【分类号】：X321

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